interesting, but it would not be the same if ur formula is right

来源: 于 2007-02-22 10:20:29 [旧帖] [给我悄悄话] 本文已被阅读：次

say total signal is 27,

1/sqrt(27) is about 1/5
1/sqrt(9) + 1/sqrt(9) ＋ 1/sqrt(9) = 1

splitting the signal into 3 only increase the noise